Home / 1,074,505,869.80-1,612,156,935.90-428,737,063.40

Finding the Fourth Proportional to 1,074,505,869.80, 1,612,156,935.90 and 428,737,063.40

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Solution

The fourth proportional to 1,074,505,869.80, 1,612,156,935.90 and 428,737,063.40 is: 643,264,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,505,869.80 : 1,612,156,935.90 = 428,737,063.40 : x
  2. Step 2: Convert to fraction form
    1,074,505,869.80/1,612,156,935.90 = 428,737,063.40/x
  3. Step 3: Cross multiply
    1,074,505,869.80x = 1,612,156,935.90 × 428,737,063.40
  4. Step 4: Simplify right side
    1,074,505,869.80x = 691,191,430,437,708,032
  5. Step 5: Solve for x
    x = 691,191,430,437,708,032/1,074,505,869.80
  6. Step 6: Final answer
    x = 643,264,452.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.